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9084 · 1.2.4

Police powers — practice questions

Practice and worked examples for 9084 Police powers. Short previews only — attempt the full question in MarkScheme against the official scheme.

Worked example 1

Officers stop Marcus on suspicion of burglary, search his bag, find tools, arrest him, and detain him for 30 hours without allowing a solicitor. Marcus is 17. Identify PACE issues and whether evidence may be excluded. [10 marks]

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Issue: Legality of stop/search, arrest, detention, and Marcus's rights as a minor.

Stop and search (s1 PACE): Lawful if officers had reasonable grounds to suspect stolen/prohibited articles linked to burglary. Must comply with Code A — grounds recorded, ethnic monitoring, search conducted appropriately.

Arrest (s24): Requires offence committed + necessity (e.g. to allow prompt investigation). Tools may support arrest if linked to burglary.

Detention: Standard limit 24 hours; extension to 36 hours needs superintendent's authorisation. The 30-hour detention is unlawful without this authorisation. Furthermore, detention reviews are required at 6 hours, then every 9 hours. A 30-hour detention without review is a breach of s40 PACE.

Legal advice (s58): Denial of a solicitor is a very serious breach. Delay is only permissible in limited cases for indictable offences and requires authorisation. A blanket denial for 30 hours is unlawful.

Appropriate adult: Marcus is 17Code C requires an appropriate adult for all key procedures, including interviews. Interviewing him without one would be a major breach.

Exclusion: Under s78 PACE, a court may exclude evidence if its admission would have an adverse effect on fairness. Given the multiple, serious breaches (detention length, denial of solicitor, no appropriate adult), there is a strong argument to exclude any confession Marcus made. The physical evidence (tools) may still be admissible if the initial search was lawful, as per R v Sang.

Worked example 2

Jamal is arrested on suspicion of conspiracy to commit armed robbery, an indictable offence. He is arrested at his home at 08:00 on Monday 1st June and arrives at the police station at 09:30 the same day. The investigation is complex and requires more time. Calculate the latest time Jamal can be detained without charge, assuming all necessary authorisations are granted.

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Step 1: Determine the 'Relevant Time'. Under s.41 PACE 1984, the detention clock starts upon arrival at the police station. This is the 'relevant time'.

  • Relevant Time = 09:30 on Monday 1st June.

Step 2: Calculate the initial 24-hour limit. The initial period of detention without charge is 24 hours from the relevant time.

  • Calculation: 09:30 Monday + 24 hours
  • Expiry of initial period = 09:30 on Tuesday 2nd June.

Step 3: Calculate the 36-hour extension. For an indictable offence, a superintendent can authorise a further 12 hours of detention, extending the total to 36 hours from the relevant time. This must be authorised before the initial 24-hour period expires.

  • Calculation: 09:30 Monday + 36 hours
  • Expiry of 36-hour period = 21:30 on Tuesday 2nd June.

Step 4: Calculate the maximum 96-hour limit. For a serious indictable offence (like conspiracy to commit armed robbery), the police can apply to a magistrates' court for a warrant of further detention. The court can authorise detention up to a maximum of 96 hours from the original 'relevant time'.

  • Calculation: 09:30 Monday + 96 hours (4 days)
  • Expiry of maximum period = 09:30 on Friday 5th June.

Final Answer: Assuming all extensions are sought and granted lawfully, the absolute latest Jamal can be held without charge is 09:30 on Friday 5th June.